mv steam to modules

modules/nix/games/default.nix

@@ -0,0 +1,6 @@
+{ lib, config, pkgs, ... }:
+{
+  imports = [
+    ./steam.nix
+  ];
+}

modules/nix/games/steam.nix

@@ -0,0 +1,15 @@
+{  lib, config, pkgs, ... }:
+let
+  inherit (lib) mkIf mkOption types;
+in
+{
+  options.smayzy.steam = mkOption {
+    type = types.bool;
+    default = false;
+    description = "steam support";
+  };
+
+  config = mkIf config.smayzy.steam {
+    programs.steam.enable = true;
+  };
+}